Open source · 5-minute install · Powered by Asterisk

VoIP telephony simplified, with a touch of AI

Voxa Center makes VoIP accessible to everyone. Design your call flows with drag & drop, manage your lines in a few clicks — without ever touching a config file.

$ curl -sSL https://raw.githubusercontent.com/grevoka/Voxa.center.app/main/install.sh | bash Copy
View on GitHub
Powered by Asterisk 20
AI Agent optional
Debian & Ubuntu
voxa.example.com/callflows/edit/3

Call Flow — Main Reception

Auto-save
Incoming call
Schedule
Mon-Fri 9am-6pm
IVR Menu
1 → Sales · 2 → Support
Queue
Sales Team
AI Agent
Support · Coral
Drag & drop your blocks

Compatible with your SIP operators

OVH TelecomTwilioVonageSipgatePlivoOpenAI

Design your telephony,
forget config files

Voxa Center replaces the complexity of Asterisk with a visual interface. Drag, connect, it's in production.

Visual call flows

Design your call paths with drag & drop: ring, IVR, queues, schedules, forwarding, AI Agent, text-to-speech. No config file needed.

SIP Lines & Trunks

Create your lines and connect your operators in a few clicks. Outbound proxy, automatic registration, configurable codecs.

WebRTC Softphone

Built-in phone in the operator panel. Make and receive calls directly from your browser.

Dashboard & Monitoring

7-day statistics, live call supervision, CDR journal, missed calls by extension, duration by operator.

Firewall & Security

IP whitelist / blacklist, automatic brute-force protection, 3 configurable security modes, SRTP/TLS encryption.

Queues, Conferences & MOH

Configurable queues, conference rooms, voicemail with email notification, music on hold.

Local text-to-speech

Piper TTS with 3 French voices. Audio preview directly in the flow editor. No cloud required.

Operators & Caller ID

Operator accounts with role management, admin impersonation, outbound numbers and access groups per operator.

AI voice agent

Add an OpenAI Realtime conversational agent to your flows. Full-duplex, 8 voices, guardrails, RAG knowledge base.

Add an AI voice agent to your call flows

Beyond the simplicity of the visual editor, integrate an OpenAI Realtime conversational agent. Your callers interact with a voice AI, just like a human.

  • Full-duplex audio — the caller can interrupt the AI naturally
  • 8 voices: Coral, Alloy, Ash, Echo, Sage, Shimmer, Verse, Ballad
  • RAG knowledge base — your documents provide context to the agent
  • Automatic guardrails — topic scoping, no AI disclosure
  • End-of-conversation detection — automatic hang-up
  • Searchable history — full transcription and estimated cost
  • Billing dashboard — budget tracking by day / week / month
Caller
SIP Phone
Asterisk 20
AudioSocket
voxa-ai
Python bridge
OpenAI
Realtime API
Bidirectional full-duplex audio across the entire chain
CoralAlloyAshEchoSageShimmerVerseBallad

Asterisk 20, native installation

All services — including Asterisk compiled from source — run natively on your server. Compatible with Debian 12, Ubuntu 22.04 and 24.04.

Debian 12 Server · Asterisk 20 PJSIP Realtime
:443
Nginx
HTTPS + WebSocket proxy
socket
PHP 8.4-FPM
Laravel 13
:5060
Asterisk 20
PJSIP Realtime
:3306
MariaDB
10.11
:6379
Redis 7
Sessions & Cache
:8088
WebSocket
WebRTC Softphone
:9092 localhost
voxa-ai
AudioSocket — OpenAI Realtime (Python)
/opt/piper
Piper TTS
3 French voices · Local synthesis
Systemd
Fail2ban · Let's Encrypt · Queue Worker · Cron · Managed services

Free software,
professional services

Voxa Center is 100% free with all features. Our paid services support you in production.

Voxa Center
Free · Open source

All features included, no restrictions. Self-hosted on your Debian/Ubuntu server.

Telephony
  • Unlimited SIP Lines & Trunks
  • Visual call flow editor
  • Queues & Conferences
  • Voicemail + SMTP email
  • SIP Firewall & Fail2ban
  • Dashboard, CDR & Live supervision
  • Built-in Asterisk console
  • Multi-language FR / EN
AI & Advanced
  • OpenAI Realtime AI Agent
  • RAG knowledge base
  • AI history & billing
  • Piper TTS — local text-to-speech
  • Built-in WebRTC Softphone
  • RBAC Operators & Caller ID
  • Call recording
  • 1-click automatic installation
Professional services

Turnkey hosting

29.90 € excl. tax / month
Starting from

We host and maintain Voxa Center for you. Nothing to install or manage.

  • Dedicated & managed server
  • Voxa Center pre-installed and ready to use
  • SSL certificates & automatic backups
  • Updates & maintenance included
  • 99.9% guaranteed availability
Choose hosting

Support & Monitoring

250 € excl. tax / month
Starting from

Monthly technical monitoring plan for your Voxa Center production installation.

  • Priority technical support
  • Proactive monitoring & alerts
  • Security updates & patches
  • Configuration & debug assistance
  • Guaranteed response time
Subscribe to support

Installation help

299 € excl. tax
Starting from · One-time service

Full installation and setup of Voxa Center on your server by our team.

  • Server installation & configuration
  • SSL certificates & hardening
  • SIP trunks & lines configuration
  • Functionality testing
  • Documentation of your setup
Request a quote

Custom development

On quote
Specific needs & integrations

Custom feature development, CRM/ERP integrations, and business-specific adaptations.

  • Custom features
  • API & CRM/ERP integrations
  • Advanced call flows
  • Custom AI agents
  • Specifications & delivery
Discuss your project

Proven technologies

Each component is chosen for its reliability in telecom production.

Asterisk
20 PJSIP
PHP
8.4 FPM
Laravel
13
MariaDB
10.11
Redis
7
Nginx
1.22
OpenAI
Realtime API
Piper TTS
1.2 · FR
Python
3.11
Debian
12

Your telephony takes shape
in minutes

Install Voxa Center for free on your Debian or Ubuntu server.